Mesen2/Core/NES/Input/HoriTrack.h

#pragma once
#include "pch.h"
#include "NES/Input/NesController.h"
#include "Shared/KeyManager.h"

class HoriTrack : public NesController
{
private:
	uint32_t _horiTrackState = 0;

protected:
	bool HasCoordinates() override { return true; }
	
	void Serialize(Serializer& s) override
	{
		NesController::Serialize(s);
		SV(_horiTrackState);
	}

	void InternalSetStateFromInput() override
	{
		NesController::InternalSetStateFromInput();
		SetMovement(KeyManager::GetMouseMovement(_emu, _emu->GetSettings()->GetInputConfig().MouseSensitivity));
	}

public:
	HoriTrack(Emulator* emu,  KeyMappingSet keyMappings) : NesController(emu, ControllerType::HoriTrack, BaseControlDevice::ExpDevicePort, keyMappings)
	{
	}

	uint8_t ReadRam(uint16_t addr) override
	{
		uint8_t output = 0;
		if(addr == 0x4016) {
			StrobeProcessRead();
			output = (_horiTrackState & 0x01) << 1;
			_horiTrackState >>= 1;
		}
		return output;
	}
	
	void RefreshStateBuffer() override
	{
		MouseMovement mov = GetMovement();

		mov.dx = std::max(-8, std::min((int)mov.dx, 7));
		mov.dy = std::max(-8, std::min((int)mov.dy, 7));

		mov.dx = ((mov.dx & 0x08) >> 3) | ((mov.dx & 0x04) >> 1) | ((mov.dx & 0x02) << 1) | ((mov.dx & 0x01) << 3);
		mov.dy = ((mov.dy & 0x08) >> 3) | ((mov.dy & 0x04) >> 1) | ((mov.dy & 0x02) << 1) | ((mov.dy & 0x01) << 3);
		
		uint8_t byte1 = (~mov.dy & 0x0F) | ((~mov.dx & 0x0F) << 4);
		uint8_t byte2 = 0x09;

		NesController::RefreshStateBuffer();
		_horiTrackState = (GetControllerStateBuffer() & 0xFF) | (byte1 << 8) | (byte2 << 16);
	}
};